Objective To evaluate the clinical benefits and safety of endoscopic thyroidectomy via bilat -eral-nipple approach and breast approach by comparison with conventional open thyroidectomy .Methods 59 pa-tients undergoing open thyroidectomy , 76 patients undergoing endoscopic thyroidectomy via breast approach , and 122 patients undergoing endoscopic thyroidectomy via bilateral-nipple approach were retrospectively analyzed . Patients'age, operation duration, intraoperative blood loss, the first day drainage volume after operation , postop-erative hospital stay , the incidence of complications , pain visual analogue score ( VAS) , postoperative satisfaction rate as well as the evaluation of cosmetic results were compared among different groups .Results No significant difference was observed in the intraoperative blood loss and the postoperative hospital stay among different groups . The operation duration and the first day drainage volume after operation in the endoscopic thyroidectomy groups ((103.5 ±26.2)min vs (108.1 ±23.9)min,(106.5 ±31.0)ml vs (117.4 ±38.8)ml)were significantly high-er than those in the open thyroidectomy group((65.3 ±22.4)min and (50.5 ±23.8)ml)(P<0.05, respective-ly).No significant difference was observed in the complication incidence among different groups .On the first day after operation, VAS of the endoscopic thyroidectomy groups (2.8 ±0.4 vs 2.9 ±0.4)was significantly lower than that of the open thyroidectomy group(3.8 ±0.6)(P<0.05, respectively), even though on the second and the third day no significant difference was observed among different groups .Besides, postoperative satisfaction rate and the evaluation of cosmetic results in endoscopic thyroidectomy groups were significantly higher than those in the open group(P<0.05, respectively).Furthermore, 90 days after operation, the satisfaction rate and the eval-uation of cosmetic results in the endoscopic thyroidectomy group through bilateral -nipple approach (96.7%,8.8 ± 0.9)were significantly higher than those in the endoscopic thyroidectomy group through breast approach (92.1%, 7.3 ±0.7)(P<0.05, respectively).Conclusions Endoscopic thyroidectomy is a feasible and safe procedure . Endoscopic thyroidectomy through bilateral-nipple approach has a higher long-term satisfaction rate as well as bet-ter cosmetic results , which is an ideal choice of thyroidectomy .

Objective To investigate the mechanism of miR-758 in hepatocellular carcinoma cell HepG2,and to investigate the regulatory role of miR-758 on astrocyte elevated gene-1 (AEG-1).Methods Transient transfection of miR-758 into HepG2 cells was performed to study the effect of miR-758 on tumor cell metastasis by transwell migration and invasion experiments.CCK8 assay was used to detect the cell proliferation activity.The cell cycle was analyzed by flow cytometry.The effect of miR-758 on epidermal mesenchymal transition (EMT) was determined by the expression of EMT markers.Transient transfection of miR-758 into human umbilical vein endothelial cells (HUVECs) was performed to explore the effect of miR-758 on luminal formation.AEG-1 3'UTR containing the binding site of miR-758 was constructed into luciferase expression vector.The miR-758 and the vector was co-transfected into HepG2 cells.And then the change in expression level of AEG-1 protein was detected through Western Blot.Results The overexpression of miR-758 inhibited HepG2 cell migration and invasion,as well as the cell proliferation and the cell cycle.The miR-758 was also found to inhibit EMT of HepG2 cells and the lumen formation of HUVEC cells.After the co-transfection of miR-758 with the plasmid containing AEG-1 gene 3'UTR into HepG2 cells,the luciferase expression was decreased.The luciferase expression was restored when the binding site of miR-758 in the 3'UTR was mutated.Further evidence by Western Blot showed the protein level of AEG-1 in HepG2 cells was significantly decreased after transfection of miR-758.Conclusions The miR-758 negatively regulates multiple steps during cancer metastasis,including cell migration,invasion,cell proliferation,EMT,as well as angiogenesis.And AEG-1 has been identified as a downstream target of miR-758.